[ridge] n [ME rigge, fr. OE hrycg; akin to OHG hrukki ridge, back] (bef. 12c) 1: an elevated body part (as along the backbone)
2. a: a range of hills or mountains b: an elongate elevation on an ocean bottom
3: an elongate crest or a linear series of crests
4: a raised strip (as of plowed ground)
5: the line of intersection at the top between the opposite slopes or sides of a roof -- ridged adj
[2]ridge vb ridged ; ridg.ing vt (1523): to form into a ridge ~ vi: to extend in ridges